JPS6117855A - Solar heat water heater - Google Patents

Abstract

PURPOSE:To heat water and increase the temperature thereof to supply hot- water by a method wherein the cold water, supplied by a predetermined amount, is circulated between a heat accumulating tank and a heat collector. CONSTITUTION:The cold water, flowed out of the opening of a water feeding pipe 20 by the operation of a foot valve 21 by a predetermined amount, overflows from the lower notched opening 19 of a hollow column body 18 and enters into the heat collecting pipes 6, 6... through a circulating pipe 10 and a connecting pipe 7, thereafter, heat exchange between a heat accumulating body or asphalt 4 is effected and the water flows into the heat accumulating tank 13 through the connecting pipe 8 and the circulating pipe 11 under being heated. Then the water returns to the heat collector 9 again to repeat the circulation and rise the temperature thereof while hot-water is supplied to necessary places through hot-water supplying pipe 22 when the hot-water is used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar water heater that utilizes enormous amounts of solar energy, and particularly to a solar water heater that is installed and used in a concrete structure such as an apartment building.

Solar water heaters have heat collectors such as flat plate heat collectors and vacuum glass tube heat collectors, and hot water supply systems include a set of pumps, a natural circulation type, a forced circulation type, etc. The equipment, heat storage tank, etc. are expensive, and there is also the problem of installation location.
Generally, they are installed and used in individual houses, but currently they are not installed in concrete structures such as so-called condominiums.

In view of the above circumstances, the present invention was made to effectively utilize solar energy even in concrete structures and to increase the energy saving effect. A waterproofing material is crimped onto the rooftop slab, and the insulation material used at this time is installed on top of the waterproofing material and used as insulation for the solar water heater's heat collector. The objective is to provide a solar water heater that further improves the heat exchange rate by embedding the heat collector in the rooftop roof while increasing the insulation effect on objects. The area is paved with asphalt, and a heat collection pipe is buried approximately in the center of the paved asphalt in the thickness direction.
From a heat collector in which the surface of the paved asphalt is covered with a transparent plate through an air layer, and a heat storage tank in which a water supply pipe equipped with an automatic water supply device is penetrated at the required position and the entire outer periphery is covered with a heat insulating material. This solar water heater is characterized in that a predetermined amount of cold water is supplied by the operation of an automatic water supply device, circulates between a heat storage tank and a heat collector, and heats up the temperature to supply hot water.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

(1) is a rooftop slab, on which a waterproof material (21) is crimped and stretched, and an asbestos insulation board (3) is laminated on its surface.The insulation board (3) is waterproof. Material (
As in 2), it is natural that it is applied to the entire surface of the roof, but it is also applied to the side wall of the heat collector (9). The heat insulating board (31) is not limited to an asbestos board and may be made of various known materials.
．． Asphalt (4) is placed with a thickness of +61, +61, . . . are buried in parallel with an upward slope on the αυ side of a circulation pipe Ql, which will be described later, at an inclination angle of 1°. Heat collection pipe (6), (6),...
The arrangement of the elements may be arranged in a spiral or zigzag manner, or the above method of arranging them in parallel is easy to implement and has good thermal efficiency. Heat collection pipe buried +61, +61,
... are connected at both ends to connecting pipes (7) and (8).

The surface of the asphalt (4) in which the heat collecting pipes +61, +61, . . . are buried is covered with a transparent synthetic resin plate (5) with an air layer in between to prevent heat radiation. The transparent plate may be made of various materials such as ordinary glass or white plate glass, and may be made of heavy or double material.

The connecting pipe (7) is connected to the circulation pipe +101, the connecting pipe (8) is connected to the circulation pipe outlet, and the circulation pipes αα and αB are each opened inside the box of the heat storage tank 0, and the circulation pipes The opening position of the pipe α■ is close to the bottom α4 of the heat storage 471031, and the opening position of the circulation pipe αD is higher than the opening position of the circulation pipe αOj.

Note that the circulation pipe uO) is provided with a bypass having a circulation pump α2, which is driven as necessary.

Heat storage tank (131 has colored zinc iron plate α9 as the outer wall, stainless steel plate α9 as the inner wall, and Styrofoam Qe
It is a closed structure box with a heat insulating material inserted into it, and the inside of this case has an opening 09 cut out only in a part near the bottom circle of the case.
It is equipped with a hollow column OQ made of stainless steel.

The upper part of this hollow columnar body αa is the foot valve clll.
A water supply pipe (2) with an open end and an attached water supply pipe (2) is installed through the box, and a hot water supply pipe (2) is opened inside the box.

The heat collecting pipes (61, (6), . . . ) used in this apparatus are made of materials such as polyethylene, copper, and stainless steel.

The present invention has the above-mentioned configuration, and a predetermined amount of cold water flows out from the opening of the water supply pipe (2) by the operation of the foot pulp (2), overflows from the lower notched opening Q9 of the hollow columnar body αg, and flows through the circulation pipe. Heat collection pipe +6 via connecting pipe (7)
1, +61, ... Connecting pipe (8) which is heated by exchanging heat with asphalt (4) which is a heat storage material
, flows into the heat storage tank +13 via the circulation pipe ttU,
The water returns to the heat collector (9) again and is heated up while repeating circulation, and when used, it is distributed to the required locations through the hot water supply pipe.

As described above, the present invention uses a heat insulating material used when constructing the upper layer of a concrete structure, while increasing the heat insulating effect of the concrete structure without reducing it.
The idea is to efficiently utilize solar heat by burying a heat collector in the roof, which is rarely used for anything other than installing water tanks and cooling jig towers. Unlike heat collectors that are fixed in place, they are not exposed to the outside, so there is no need to worry about them during typhoons, and they are extremely safe.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a heat collector of the present invention, and FIG. 2 is a partially cutaway perspective view showing an embodiment of a heat storage tank. In the figure (3): Heat insulating plate (4) Near field (6): Heat collecting pipe (7), (8): Connecting pipe QOl, (Ill: Circulation pipe QG+: Styrofoam 0η stainless steel plate C11l: Foot valve Figure 1

Claims (1)

[Claims] 1. Heat collection by paving asphalt on a heat insulating material, burying a heat collection pipe approximately in the center of the paved asphalt in the thickness direction, and covering the surface of the paved asphalt with a transparent plate through an air layer. The automatic water supply system consists of a water supply pipe equipped with an automatic water supply system, a circulation pipe to the heat collector, and a heat storage tank whose entire outer periphery is covered with a heat insulating material, through which the hot water supply pipe is installed at the required position. A solar water heater characterized by circulating a predetermined amount of cold water between a heat storage tank and a heat collector through the operation of a solar water heater to raise the temperature and supply hot water.